Hi there.
I thought my Quad 606 power amp was good enough for me until a friend brought over his Willsenton R8 and tested on my PMC 25.23 (a transmission line floorstander speaker). Wow, the bass was as deep as it can get with full bodied sound running as a power amp. Fed through by a China made pre (using Jadis circuitry). Next a friend loaned me a pair of Dynaudio floorstander and the R8 drove it effortlessly without sounding drained. The high current output from R8 can drive even the most difficult speakers with ease. Thank god for China made amps. I get to enjoy high quality music without breaking the bank.